Electronic calculator with graph displaying function
First Claim
1. An electronic calculator with a graph displaying function comprising:
- an input device having various function keys for inputting data and performing various operations, the operations including screen storage, screen display, deletion and rearrangement;
a display device for displaying screen images, the screen images including numerical value images, numerical formula images, and graphic images inputted from the input device;
a first storage device for storing a control program;
a second storage device for successively storing the screen images; and
a control device for controlling the input device, the display device, the first storage device, and the second storage device by means of the control program,wherein the control devicestores separate screen images displayed on the display device successively in the second storage device upon initiation of the screen storage operation by the input device,successively reads out and displays on the display device in their order of storage, screen images stored in the second storage device upon initiation of the screen display operation by the input device.
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Accused Products
Abstract
An electronic calculator with a graph displaying function includes: an input device having various function keys for inputting data and performing various functions; a display device for displaying one of screen images including a numerical value image, a numerical formula image, or a graph image inputted from the input device; a first storage device for storing a control program; a second storage device for if storing at least one of the screen images; and a control device for controlling each of the input device, the display device, the first storage device, and the second storage device by means of the control program, wherein the control device allows a screen image displayed successively on the display device to be stored in the second storage device by a screen storage operation of the input device, and allows each screen image to be successively read out and displayed on the display device in an order of storage in the second storage device by a screen display operation of the input device.
110 Citations
14 Claims
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1. An electronic calculator with a graph displaying function comprising:
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an input device having various function keys for inputting data and performing various operations, the operations including screen storage, screen display, deletion and rearrangement; a display device for displaying screen images, the screen images including numerical value images, numerical formula images, and graphic images inputted from the input device; a first storage device for storing a control program; a second storage device for successively storing the screen images; and a control device for controlling the input device, the display device, the first storage device, and the second storage device by means of the control program, wherein the control device stores separate screen images displayed on the display device successively in the second storage device upon initiation of the screen storage operation by the input device, successively reads out and displays on the display device in their order of storage, screen images stored in the second storage device upon initiation of the screen display operation by the input device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electronic calculator with a graph displaying function comprising:
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an input device having various function keys for inputting various data and performing various operations, the operations including screen storage, screen display, deletion and rearrangement; a display device for displaying on a screen the various data inputted from the input device, the various data including numerical value images, numerical formula images, images of results of calculation processes and graphic images of the numerical formulas; a first storage device for storing a control program for executing instructions from the various function keys; a second storage device for storing the various data; a control device for executing the calculation processes and producing the graphic images of the numerical formulas based on the numerical values and the numerical formulas inputted from the input device, by means of the control program stored in the first storage device, wherein the control device controls such that the graphic images of the numerical formulas displayed on the display device are successively stored in the second storage device upon initiation of the screen display operation by the input device, and the plurality of graphic images of the numerical formulas successively stored in the second storage device are read out in a forward direction or in a rearward direction and displays on the screen of the display device by pressing an up key or a down key in the input device. - View Dependent Claims (13, 14)
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Specification